Water - Avoid drinking lot of water in a single stretch in short time.

For USG-scan...avoid drinking lot of water in a single stretch.It may end up in Hyponatremia.It is necessary to drink adequate water,but not at once.Drink it in frequent interwal in small quality.

Avoid drinking too much of water before scan to avoid discomfort,which u may feel while doing scan.After drinking it may take some time for u to feel that bladder is full.As u may not feel that fullness of bladder immediately don't drink a lot and make urself uncomfortable.Instead drink water little by little and take a small walk.

Always remember that medical situation varies and priority varies.So there may be situations which may make u wait .Try to understand and accept that situation too.

time.